They delay it for long enough that people begin to lose interest, get distracted, and can't hold the same levels of anxiety/anger as election day.How long does it normally take you to cool down? That long.

I predict that America will not crumble into the sea, there will be sunlight tomorrow morning, and there will be hope as long as people don't give in to the hate and fear our country's media force upon us every hour of every day.